RATE OF REACTION BETWEEN SODIUM THIOSULPHATE AND HYDROCHLORIC ACID COURSEWORK

I am going to investigate how varying the concentration of Sodium Thiosulphate affects the rate of reaction with Hydrochloric Acid. There aren’t any obvious anomalous results in my graphs so therefore I believe that my results do support my prediction. I believe that when the most concentrated solution is used the reaction would be at its fastest. I predict that as the concentration of the Sodium Thiosulphate doubles, the rate of the reaction will double. The above graphs show that rate against temperature has a negative positive correlation, however time against temperature has a negative correlation. Only a small percent result in a reaction. However apart from that I don’t think that there is any thing else that I could have done to improve my test results except have had more time to have done the extra set of results that I need to get a wider range of results.

I would ideally like to wear an apron to protect the skin and clothing but none are available for use so I will just have to careful when heating and transferring liquids. All of these precautions will make my final results more reliable and keep anomalies at a minimum so therefore make the entire investigation more successful. I will know when the reaction is taking place as the solution turns from clear to opaque. When handling hot beakers and measuring cylinders a pair of tongs will be used. Reaction Rates Chemical Reactions Essays].

This can be justified by relating to the collision theory; when the temperature is increased the particles will have more energy and therefore move faster. Sodium Thiosulphate and Rate of reaction between sodium thiosulphate and hydrochloric acid coursework Acid Reaction Investigation Essay – Sodium Thiosulphate and Hydrochloric Acid Reaction Investigation Aim To see the effects of concentration on the rate of a reaction between sodium thiosulphate and hydrochloric acid.

If they have more energy there is greater chances of successful collisions meaning the reaction occurs faster. In this experiment I have found that as the temperature is increased the time taken for the reaction to take place decreases.

The four main variables that affect rate are: The above graphs show that rate against temperature has a negative positive correlation, however time against temperature has a negative correlation.

Background information The collision theory briefly: However apart from that I don’t think that there is any thing else that I could have done to improve my test results except have had more time to have done the extra set of results that I need to get a wider range of results. The rate of reaction is the rate of loss of a reactant or the rate of formation of a product during a chemical reaction.

Only particles with enough energy to overcome the barrier will react after colliding They will therefore collide more often and with more energy. On the other hand, a reaction which takes a longer time is known as a SLOW reaction, and as a result is known to have a LOW rate of reaction I believe that when the most concentrated solution is used the reaction would be at its fastest.

I will use the same standard each time for judging when the cross has disappeared. While the acid and thiosulphate solution are heating up I will place a conical flask on to a piece of a card which has a large black cross drawn on its center.

I predict that as the concentration of the Sodium Thiosulphate doubles, the rate of the reaction will double. Using my preliminary experiments I decided on using the following apparatus: Rates of Reaction – The concentration of hydrochloric acid and the rate of reaction with sodium theosulphate – Rates of Reaction – The concentration of hydrochloric acid and the rate of reaction with sodium theosulphate Introduction During a chemical reaction, particles collide with each other.

What factors affect the rate pf reaction between sodium thiosulphate and hydrochloric acid?

When handling hot beakers and measuring cylinders a pair of tongs will be used. In a more concentrated solution there are more particles so collisions occur more frequently A certain amount of energy is needed to allow a reaction to take place. During the heating stage of the experiment, I will be as accurate as I can using the equipment available to me, however the water baths have a margin of error in using them as it will be human judgment which read the thermometer.

Reaction Between Hydrochloric Acid and Sodium Thiosulphate Essay – Reaction Between Hydrochloric Acid and Sodium Thiosulphate Introduction I will be conducting two experiments to determine how two factors affect the rate of reaction in the reaction between hydrochloric acid and sodium thiosulphate. This is because when the temperature is increased the particles have more energy and therefore move faster, meaning that the will collide more often with more energy.

There are certain factors that can affect the rate of reaction. This means that as the rate of reaction increasers the time taken for rate of reaction between sodium thiosulphate and hydrochloric acid coursework reaction is decreased, this means that more reactions can take place in a shorter time.

Equation for my experiment: I will repeat this process three times for each of my six temperatures. I will then place a thermometer into the diluted thiosulphate and place it in to water bath.

Get feedback on grammar, clarity, concision and logic instantly. The reaction that takes place is as follows: It is measured by dividing 1 by the time taken for the reaction to take place: Investigating the Rate of Reaction of Sodium Rate of reaction between sodium thiosulphate and hydrochloric acid coursework and Hydrochloric Acid – Investigating the Rate of Reaction of Sodium Thiosulphate and Hydrochloric Acid I predict that the higher the concentration then the faster the reaction, this is because when water is added the sodium thiosulphate solution and the hydrochloric acid have a more neutral pH and it becomes more dilute then it will be less reactive will the other particles in the solution.

I will also investigate if there will be a change in temperature after the reaction has occurred. This means that the graphs drawn up in my analysis will have positive correlation, and will probably be curved as the increase in rate of reaction will not be exactly the same as the temperature is increased. I am going to investigate the effect of changing the concentration of Sodium Thiosulphate on the rate of the reaction between Hydrochloric Acid and Sodium Thiosulphate.

This is due to the energy rate of reaction between sodium thiosulphate and hydrochloric acid coursework to overcome.

Had I done this experiment again I would have used a Bunsen burner instead of a water bath as it is more accurate to get the temperatures that I would have wished.